Pseudobacteria \Pseu`do*bac*te"ri*a\, n. pl. [Pseudo- + bacteria.] (Biol.) Microscopic organic particles, molecular granules, powdered inorganic substances, etc., which in form, size, and grouping resemble bacteria. Note: The globules which divide and develop in form of chains are organized beings; when this does not occur, we are dealing with pseudobacteria. --Sternberg.